Sensor

Strap Type Tire Pressure Sensor (Transmitter)

Description

We are pleased to introduce our product in tire pressure monitoring – the external tire pressure sensor mounted on the car’s wheel hub. This sensor automatically monitors tire pressure, temperature and battery charge to ensure optimal performance and road safety.

The transmitter system consists of the following components:Electronic Part (including tire pressure module, crystal oscillator, antenna, RF module, low-frequency module, battery) and Architecture Part (shell, strap).

product details

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Tire Pressure Transmitter System

Tire pressure module: This is a highly integrated tire pressure sensor module that inherits the microcontroller unit (MCU), pressure sensor, and temperature sensor. By embedding firmware into the MCU, it can collect pressure, temperature, and acceleration data, and process and send them through the RF module.

Crystal oscillator: The crystal oscillator provides an external clock for the MCU, and by configuring the MCU's registers, the center frequency and baud rate parameters of the RF signal sent by the transmitter can be determined.

Antenna: The antenna is capable of transmitting data from the MCU.

Radio frequency module: Data was taken from the tire pressure module and sent via 433.92MHZFSK radio frequency.

Low frequency antenna: The low-frequency antenna responds to low-frequency signals and transmits them to the MCU.

Battery: The battery level has a significant impact on the lifespan of the transmitter when supplying power to the MCU.

PCB: Fixed components and provide reliable electrical connections.

Shell: It isolates internal electronic components from water, dust, static electricity, etc., and at the same time prevents internal components from direct mechanical impact.

Tire Pressure Transmitter Features

• High integration (pressure, temperature, acceleration data collection)

• High precision 16kPa@ (0℃-70℃)

• RF wireless transmission

• High battery life ≥5 years

• Follow ISO9001 and IATF16949 quality system

Technical Parameter

Operating voltage	2.0V~4.0V
Operating temperature	-40℃~125℃
Storage temperature	-40℃~125℃
RF operating frequency	433.920MHz±20kHz
RF FSK frequency offset	±45KHz
RF Symbol Rate	9.6kbps
High-frequency transmitting power	≤7.5dBm（VDD=3.0V,T=25℃）
Pressure measuring range	0 kPa ~1400kPa
Static current	1.5uA@3.0V
Emission current	9mA@3.0V
Barometric measurement accuracy	≤16kPa@（0℃~70℃） ≤24kPa@（-20℃~0℃，70℃~85℃） ≤38kPa@（-40℃~-20℃，85℃~125℃）
Temperature detection range	-40℃~125℃
Temperature measurement accuracy	≤3℃（-20℃~70℃） ≤5℃（-40℃~-20℃，70℃~125℃）
Active speed	≥20km/h
LF frequency	125kHz±5kHz
LF Symbol Rate	3.9kbps±5%
Battery power detection range	2.0V~3.3V
Battery power measurement accuracy	±0.1V
Low battery alarm	＜2.3V
Battery life	≥5 years

Tire Pressure Transmitter Appearance

Stainless steel strap

Work mode conversion

Working mode specification

Mode	Sampling Rate					Tx Interval
Mode	Pressure	Temperature	Motion	Battery	LF	Tx Interval
Off Mode	6s	N/A	N/A	N/A	2s	N/A
Stationary Mode	6s	When Tx	30s	When Tx	2s	1 frame/120s
Drive Mode	6s	When Tx	30s	When Tx	2s	3 frames/60s
Alert Mode	2s	When Tx	N/A	When Tx	2s	3 frames/ΔP＞5.5kPa